Dometic SlideTopper Roller Tube Kit - 2.5" x 156" - Part# 3311242.156

The Dometic SlideTopper Roller Tube Kit is the replacement roller mechanism for your RV's slide-out room topper system. This 2.5" diameter tube measures 156" in length and is essential for smooth, reliable slide-out operation. If your slide topper is sticking, grinding, or not retracting properly, a worn roller tube is often the culprit.

Key Features

• 2.5" diameter roller tube designed for SlideTopper systems
• 156" length fits standard full-wall slide-out applications
• Genuine OEM Dometic part ensures perfect fit and function
• Replaces worn or damaged tubes that cause binding or noise
• Direct replacement — no modifications needed
• Durable construction withstands repeated extension and retraction cycles

Technical Specifications

Frequently Asked Questions

How do I know if my roller tube needs replacement?

Signs include grinding or squeaking noises when extending or retracting your slide-out, visible flat spots or damage on the tube surface, or the topper sticking partway in or out. If your slide-out operation has become rough or jerky, the roller tube is likely worn.

Will this 156" tube fit my RV?

This length is standard for full-wall slide-out toppers on most Class A and larger Class C motorhomes. Measure your existing tube or consult your RV's manual to confirm the 156" length matches your model before ordering.

Is this a direct replacement, or do I need a technician?

This is a direct OEM replacement part. Installation typically requires removing the old tube and sliding the new one into place, though complexity varies by RV model. Many owners handle this themselves, but professional installation is recommended if you're unfamiliar with your slide-out system.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts for RV owners who need exact OEM components. Shipping directly from Elkhart, Indiana — the RV capital of the world — we stock genuine Dometic parts and provide expert support to help you identify and install the right component for your rig. When your slide-out matters, trust the specialists.